Stop-motion.



PATENTED OCT. 25. 1904.

H. L. POWELL.

STOP MOTION.

APPLIUATION FILED APR. 15, 1904.

N0 MODEL.

Patented October 25, 1904.

NITED STATES PATENT FFICE.

HARVEY L. POWVELL, OF ST. MARYS, OHIO.

STOP-MOTION.

SPECIFICATION forming part of Letters Patent No. 773,418, dated October 25, 1904.

Application filed April 15, 1904. Serial No. 203,291. (No model.)

To all whom, it may concern.-

Be it known that I, HARVEY L. POWELL, a citizen of the United States, and a resident of St. Marys, in the county of Auglaize and State of Ohio, have invented a new and Improved Stop-Motion, of which the following is a full, clear, and exact description.

This inventionrelates to a mechanism for automatically stopping the motion of rope or equivalent transmission means upon breakage or other derangement thereof.

The invention is useful in various connections, an example of which may be seen on spinning-mules.

According to the embodiment of the invention here shown I employ a prime moving device restrained by the normal transmission means and active upon the derangement of said means, this prime moving device when active transmitting movement to devices for throwing out of action the driving mechanism.

The invention involves various features of structure and organization,\vl1icl1 will be fully set forth hereinafter.

Reference is to be had to the accompanying drawings, illustrating an embodiment of my invention used in connection with aspinningmule, in which drawings like figures of reference indicate like parts, and in which Figure 1 is a general view showing in perspective certain parts of a spinning-mule and illustrating my invention applied thereto, and Fig.2 is a fragmentary perspective view showing the latch for holding back the spring-actuated belt-shifting device.

10 indicates the carriage of the spinningmule. 11 indicates one of the several ropes for moving the carriage, said rope 11 passing at one end of the apparatus over an idlersheave 12 and thence to the other end of the apparatus over a sheave 14, and finally to a fusee 15 on the drive-shaft 16. Said shaft carries fast and loose pulleys 17, coacting with a belt 18.

The drawings illustrate only one of the driving-ropes 11 and only one of the prime moving devices of the stop-motion. In the practical adaptation of my invention to a spinmng-mule, however, a prime moving device will be used in connection with each of the several ropes, so as to stop the apparatus upon the fracture or derangement of any one of the same.

The prime moving device comprises a rockshaft 19, on which is fastened an arm 20. Said arm coacts with the bent end 21 of an elbow-lever 22, which is fulcrumed on a suite able support 23 and carries at the free end of its horizontal arm a roller 24:, which bears under the bottom run of the rope 11.

25 indicates a spring which is applied to the elbow-lever 22, tending to throw up the roller 24: and engage the bent end 21 of the elbowlever with the arm 20. The rope 11, running over the roller 24, holds the elbow-lever 22 down against the action of the spring 25; but should the rope become broken or otherwise deranged'the elbow-lever 22 will be allowed to move under the action of the spring, and the bent end 21 of said lever in striking the arm 20 will cause the shaft 19 to rock, and it is by the rocking movement of this shaft that the operation of the stop-motion is started. In practice the shaft 19 will be run across the spinning-mule, so that the several primemoving devices may act on the same shaft.

Said shaft 19 carries at one end an arm 26, connected by a link 27with an arm 28, the opposite end of which is pivoted on a suitable support 29. Said arm 28 bears under a pin 30, projecting laterally from a latch 31, which is vertically movable in a suitable stand 32.

33 indicates a spring for pressing the latch 31 down into active position.

Mounted in suitable bearings 34 is a rod 35, which extends longitudinally of the machine and is longitudinally reciprocall To said rod 35 is adjustably secured a block 36, having on its upper side a track 37. Said block and track are adapted to engage the latch when the latter is in active position, and in this manner reciprocal movement of the rod 35 in one direction is prevented. When, however, the rocking of the shaft 19 lifts the arm 28, it will also lift the latch 31, and the parts 35, 36, and 37 will then be free to slide, the latch then lying on the track 37, as may be understood from Fig. 2.

38 indicates an expansive spring which bears against a collar 39 on the rod 35 and one of the said bearings 34:, this spring tending to move the rod rightward in Fig. I. Said rod carries at its rear or left hand end a slide or tail piece $0, having a longiti'ldii'ial slot 4E1 therein, receiving a guide-pin L2, suitably mounted in a stationary manner, so as to guide the slide 410 as it moves with the rod 35. The slide 40 has an upwardly-projected portion 43 at one end engaging a cam 44. The cam lies over the slide and suitably pivotcd at the point 45. loacting with the cam is a roller 46, carried on. a vertical lever 4C7. Said lever has a slotted upper end having suitable connection with a sliding bar or shaft 48, mounted in bearings L9, as shown, and carrying a belt-shifter 50.

When the rope 11 becomes deranged and the prime moving device begins its action, a rocking movement will be imparted to the shaft 19, lifting the arm 28 and releasing the rod The spring 38 then asserts itself and imparts through the medium of the parts 35 and 40 a swinging movement to the cam 4A, this bringing about a responsive movement of the lever at? and the rod 48, and by the action of these parts and the belt-shifter 50 the belt is thrown from the fast to the loose pulley and the operation of the apparatus is at once stopped.

It should be apparent that the use of my invention is in no way limited to spinningmules or to the herein-disclosed arrangement of the prime moving device with respect to a rope, such as the rope l1. Theinvention may be used in connection with various machinery and aranged therewith in such a way that the prime moving device will be responsive to a rupture or derangement of any of the parts of the machine, and thus bring about the movementof the devices 48 and 50 or their equivalents, by which movement to stop the driving action of the parts.

Various changes may be made in the details of the embodiment of the invention as herein shown without in any way departing from the spirit thereof.

In one aspect the latch 31, in connection with its contiguous parts, may be considered a restraining device for the stopping mechanism.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a stop-motion, the combination of a lever, means tending to move the lever in one direction, a member in connection with which the stop-motion is used and restraining said lever, a rock-shaft, an arm on the rock-shaft and adapted to be engaged by the lever to move the rock-shaft, a restraining device in connection with the rock-shaft, and means for transmitting the stopping movement, said means being normally held by the restraining device.

2. In a stop-motion, the combination of a lever, means tending to move the lever in one direction, a member in connection with which the stop-motion is used and restraining said lever, a rock-shaft, an arm on the rock-shaft and adapted to be engaged by the lever to move the rock-shaft, a restraining device in connection with the rock-shaft, and means for transmitting the stopping movement, said means being normally held by the restraining device and comprising a rod and a spring pressing same in one direction.

3. In a stop-motion, the combination of a lever, means tending to move the lever in one direction. a member in connection with which the stop-motion is used and restraining said lever, a rocleshaft, an arm on the rock-shaft and adapted to be operated by the lever, a latch, means in connection with the rock-shaft for releasing the latch, and means for transmitting the stopping movement, said means comprising a reciproca rod and a track mounted on the rod and adapted to be engaged at one end by the latch, the latch lying on the track upon being moved out of engagement with the end thereof.

4. In a stop-motion, the combination of an elbow-lever, one arm of which is adapted to engage the element in connection with which the stop-motion is used, means tending to move the elbow-lever against said element, a rock-shaft, an arm on the rock-shaft and adapted to be engaged by one arm of the elbow-lever upon the movement of said lever, a swinging arm in connection with the rockshaft to be operated thereby, a stand, a latch mounted in the stand, a reciprocal bar adapted to be normally restrained by the latch, means for moving the bar, and means for connecting the same with the motion controlling means.

5. In a stop-motion, the combination of a reciprocal member, means for operating and controlling the same, a swinging cam operated by said member, a lever operated by the cam, and means in connection with the lever for transmitting the movement thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HAR VEY L. POWVELL.

WVitnesses:

FRANK KoNLnY,

GEORGE W. PmcnARn, 

